(From
MasjidTucson.com)
Rashad Khalifa has his own criteria to tell the differences between God's messenger and a fake messenger.
"God's messenger is supported by God while the fake messenger is not." He further clarifies that "God's messenger is supported by God's invisible soldiers."
One of the verses he cites is [3:125] Indeed, if you steadfastly persevere and maintain righteousness, then they attack you suddenly, your Lord will support you with five thousand angels, well trained.
He was attacked suddenly in his masjid in Tucson but God did not support him with invisible soldiers/angels because he was stabbed 29 times to death. So by his own criteria only "God's messenger is supported by God while the fake messenger is not." He was clearly not supported therefore was a fake messenger. He also states that "God's messenger is granted victory and dignity in this world and the next" but he was not protected by God and was brutally murdered which is not a dignified death or victory.